jsMath not working in blogger/blogspot

My blog has posts that uses jsmath: http://blabnotes.blogspot.com I put
<script src="<myserver> /jsMath/easy/load.js" type="text/javascript"></script>
in my template. Some jsmath functions work, and some dont.
As proof that they could work, here are examples:

Inline math

This is an example of $\frac{1}{\sqrt{2 \pi \sigma^2}}$ inline math

gives

This is an example of $\frac{1}{\sqrt{2 \pi \sigma^2}}$ inline math

Equation Environment

\begin{equation} p(x) = \frac{1}{\sqrt{2 \pi \sigma^2}} e^-x^2/{2 \sigma^2} \end{equation}

gives

\begin{equation} p(x) = \frac{1}{\sqrt{2 \pi \sigma^2}} e^-x^2/{2 \sigma^2} \end{equation}

Shorthand Equation Environment

$$p(x) = \frac{1}{\sqrt{2 \pi \sigma^2}} e^-x^2/{2 \sigma^2}$$

gives

$$p(x) = \frac{1}{\sqrt{2 \pi \sigma^2}} e^-x^2/{2 \sigma^2}$$

<myserver>/jsMath/easy/load.js